1. Alan was afraid that he might fail of failing the mid-term examination.
2. No one at that time was aware that the matter was urgent
of the urgency of the matter / of the matter's urgency.
3. We can assure you that we are committedof our commitment to providing the best service.
4. Karen was very sorry that she submitted for submitting the assignment late.
5. The accused soldiers tried to convince the public that they were innocentof their innocence.